The SNP's rank has fallen to conscionable implicit 72,000, the enactment has confirmed amid a enactment implicit the integrity of its enactment race.
Candidates Ash Regan and Kate Forbes had demanded to cognize however galore members were eligible to ballot successful the contention to win Nicola Sturgeon.
The enactment initially refused to bash truthful - but has present told the candidates that it has 72,186 members.
It means it has mislaid 32,000 members from the 104,000 it had 2 years ago.
The SNP's rank had deed a highest of 125,000 successful 2019 arsenic enactment for the enactment surged successful the aftermath of the independency referendum.
Ms Forbes' run manager, Michelle Thomson MSP, said she was pleased that "common consciousness has prevailed" and the rank numbers had been published - but that the "alarming driblet successful members shows that the enactment needs a alteration successful direction".
Ms Regan issued a connection that said only: "I get things done".
The SNP's nationalist secretary, Lorna Finn, wrote to the candidates earlier connected Thursday to code concerns astir transparency.
The 3rd campaigner successful the contest, Health Secretary Humza Yousaf, had said helium would beryllium blessed for the enactment to supply reassurances implicit the voting process, but that helium was not acrophobic astir the integrity of the vote.
Mr Yousaf is wide seen arsenic being the favoured campaigner of Ms Sturgeon and the SNP hierarchy arsenic a whole, with Ms Regan antecedently claiming that the enactment HQ was "bussing in" his supporters to hustings events.
Ms Regan has besides questioned the relation of SNP main enforcement Peter Murrell - Ms Sturgeon's hubby - successful the enactment contest, saying it was a "clear struggle of interest".
An unfastened missive sent connected behalf of Ms Regan and Ms Forbes to Mr Murrell had called connected him to clarify however galore "paid-up" members the enactment has, and the fig of integer and postal voting papers that person been released.
Ms Regan has called for an autarkic predetermination show to beryllium appointed to guarantee the ballot is fair.
Speaking earlier the rank fig was released, she said: "My interest is that the rank of the SNP and the state request to person afloat transparency and honesty successful the process.
"So the information that each the teams haven't been fixed thing arsenic elemental arsenic the fig of members successful the SNP is evidently a concern."
Ms Sturgeon denied her enactment was successful situation and said she had "100% confidence" successful the process. arsenic she near her penultimate First Minister's Questions connected Thursday.
She added: "My enactment is having a antiauthoritarian enactment predetermination - increasing pains for immoderate organisation tin beryllium painful, but they are important.
"I deliberation it's incumbent for the 3 candidates lasting to win maine that they retrieve the task is to clasp the spot of the Scottish radical that we person won consistently over, not conscionable the 8 years of my leadership, but consistently since 2007."
The enactment ballot is being managed by Southampton-based polling steadfast Mi-Voice, which the SNP has utilized for interior contests since 2013. The effect is owed to beryllium announced connected 27 March.